EP 4117905 A1 20230118 - DUNNAGE CONVERSION MACHINE FOR PRODUCING A DUNNAGE PAD HAVING SLIT-SHEET MATERIAL THEREIN
Title (en)
DUNNAGE CONVERSION MACHINE FOR PRODUCING A DUNNAGE PAD HAVING SLIT-SHEET MATERIAL THEREIN
Title (de)
POLSTERUMWANDLUNGSMASCHINE ZUR HERSTELLUNG EINES POLSTERKISSENS MIT GESCHLITZTEM BLATTMATERIAL DARIN
Title (fr)
MACHINE DE CONVERSION DE FARDAGE POUR PRODUIRE UN COUSSIN DE FARDAGE COMPORTANT UN MATÉRIAU EN FEUILLE FENDUE EN SON SEIN
Publication
Application
Priority
- US 202062987025 P 20200309
- US 2021021581 W 20210309
Abstract (en)
[origin: WO2021183570A1] A dunnage conversion machine includes (i) a pair of gripping rollers configured to rotate at a first rotational speed to advance a slit-sheet material in a downstream direction; (ii) a pair of expansion rollers configured to rotate at a second rotational speed, faster than the first rotational speed, creating a stretching force on the slit-sheet material and further advancing the slit-sheet material, causing expansion of the slit-sheet material to a fully expanded state; and (iii) a pair of relaxation rollers configured to rotate at a third rotational speed, slower than the second rotational speed, reducing the stretching force and further advancing the slit-sheet material, allowing the slit-sheet material to relax to a partially expanded state. The pair of relaxation rollers (iii) also are configured to capture the slit-sheet material in the partially expanded state between a top cover sheet and a bottom cover sheet to form a dunnage pad.
IPC 8 full level
B31D 5/00 (2017.01)
CPC (source: EP KR US)
B31D 5/0065 (2013.01 - EP KR US); B31D 2205/0047 (2013.01 - EP KR US); B31D 2205/0058 (2013.01 - EP KR US); B31D 2205/0064 (2013.01 - EP KR US); Y02W 90/10 (2015.05 - EP)
Citation (search report)
See references of WO 2021183570A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021183570 A1 20210916; AU 2021236071 A1 20220922; AU 2021236071 B2 20240606; BR 112022017989 A2 20221018; CA 3170067 A1 20210916; CN 115335217 A 20221111; EP 4117905 A1 20230118; JP 2023519171 A 20230510; JP 7422244 B2 20240125; KR 20220130245 A 20220926; MX 2022011200 A 20221213; US 2023094170 A1 20230330
DOCDB simple family (application)
US 2021021581 W 20210309; AU 2021236071 A 20210309; BR 112022017989 A 20210309; CA 3170067 A 20210309; CN 202180020676 A 20210309; EP 21716007 A 20210309; JP 2022554351 A 20210309; KR 20227031282 A 20210309; MX 2022011200 A 20210309; US 202117905986 A 20210309